According to experts at National Geographic, the future of fish farming (aquaculture) may rely on giant, fish-filled balls floating around in the ocean.

...[A]utomated cages could herald an entirely new form of fish farming.

They might be turned loose to mimic natural systems by following carefully chosen ocean currents. The robotic fish farms could help lead to larger, healthier crops of farmed fish far from crowded coastal areas, where farmed fish both suffer from poor water quality and, by producing waste, add to water woes.

Cages might even generate their own electricity by harnessing solar energy, wave energy, or other forms of renewable power.

This reminds me of middle school. Are you thinking what I'm thinking? You are if you answered "cafeteria fish sticks"! Loved those sticks. One time I even had a fish rock! I chipped a tooth and lost it in my corn. Chocolate milk, whee!!!